Html elements header, abbr, and object

header element The HTML Header Element (<header>) represents a group of introductory or navigational aids, abbr element Specifies that a string is an abbreviation for a longer word or phrase, object element Defines an object embedded in the document. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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header header and abbr, header, abbr, and object

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